High force rotary actuator
US9525319B2 · kind B2 · utility
2Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Jun 13, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An actuator includes a first stator with four first poles and a second stator with four second poles aligned with the four first poles. A permanent magnet is attached to the first stator and the second stator. Four moving armatures are positioned at terminal ends of the four first poles and the four second poles. Coils are wrapped around the first stator and the second stator. A controller selectively applies current to the coils to migrate flux created by the permanent magnet through selective poles of the first stator and the second stator and thereby alter the size of air gaps associated with the four moving armatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.